Electroplating-tank.



PATENTED APR 17, 1906. LLAOE.

v G. G. BACKUS 3: G. L. WA

ELEOTROPLATING TANK. APPLICATION FILED JULY 27, 1905.

3 SHEETS-SHEET l.

invemfam W '9 1 I CC No. 817,832. PATENTED Amlv, 190 6 0. G. BAGKUS & G.L. WALLACE.

ELEOTROPLATING TANK.

APPLICATION FILED JULY 27,1905.

3 sunmsisutmir 2 Invemaw: ala/Wu. 5 6M ad aw A ttyd No. 817,832. PATENTEI) APR. 17, 1906. G. G. BAGKUS & G. L. WALLACE.

BLEGTROPLATING TANK.

APPLIUATIOH FILED JULY 27, 1905.

3 SHEETS-SHEET 3.

w by Mm A...

i iv (JEQl-XlilEN-il l o.

assnmvss N. Y

s'fipociliczation I is; F: 01 n *w' rush ital l. ill hill/loll,

WALLACE, U1 lll lll" Y'Rl l, ill )1, lllllll UOIVIPANY, 0% NEW YORK,

Eatentecl April 17, 1906.

Avplloatlon filed July 27, 1995 Serial No. 271,405.

To mid whom it iii/ Q, ooucern:

Be it known thatwe, unAlliCNCE ll. lllxciws and GEORGE L. 7 mos,oitizcns of the United States, and r '{l'oo'ts ol the borough ofManhattan, city, county, and Stole oi ll ow Yorlq have invented certain11 W and usoful Improvements in ,F lootror -Tonlts, of Y ,which thfollowing is o Our'invonli 11 rolotes tanks aclnptocl to plate smolloz'ticles at the 5 tanks comprising o eceptacle ins merssn or partiallyloin on in the olostzxoplutir solution and adapted to rscsivo thearticles he plated.

The objects of our inv ntlon are to procluoo a device of this kind whichwill be whoop to nninufacturo, sllioiont in operation, easy to operate,especially when inserting min romow ing the articles to be 1 'od orwhich have been plated, and, forth Jo produoo such a device as will notbe o be zjlsnuigod by the articles while oci o luten-anal as will notbreak and lows-gs tho articles themselves, 5 and, forth I, to :Lrrnngothe ole-strol L in the solution that there will always be a unifo mslistri "Poor of sun to such oution of the ourrent throi 101 of orum owlthe IlOUlli-Sti. Fig. 4 1S oncl ivo nosition. Fig, 5 is n view oi one oftho hoards which orni. tho nismhors of the rotatable drum. Fig: 6 is actionol View taken on lines 6 6 of F H and 8 are (n; amniotic ii 6W8 ofand shows the iirtnn one side and at tho i is a shaft 2, journolod inthe supports 4:. The

arms 5 and 6 are rigidly osrried'by the shaft At their outer ends thesearms 5 and 6 sorry a horizontal shaft 7. rios the arms 8 and 9, whichare loosely hilfgod at one end to the some, so that they only readilyswing in av pendulum fashion. covered with hard rubber or similarsulmstanco so that they will not he acted upon by tho solution in thotank. The shaft 10, carrying the angular drum l2,

' inoun'totli in the lower ends of tl; onus anl l and this shaft whereit pone-- trzitos the interior of tho (iron: is provided with numerousspokes 13 13, which are distrioutod throughout the length of the drumond are placed at various inclinations to the shaft, so that they willmore thoroughl stir up the articles while they are being plated andwhile the drum. being rotated.

The sluiit 'Y' cor- The angular or prlsmoidal drum 12 is ronoted bymeans of the following mechanism: Thpulley 14 is adopted to receive thodrivingholt and transmits motion through the pinion l5, goai whool l6,sprocket 17, chain 8, and sprooliot 19 to the drum. It is oh- :ou thatthe drum can ho driven by the 14 only when the drum is in its lowestporotivo position, so that thogoor- 7/ 16 will be in mesh with thepinion 15. s end oi tho arm 6 attached to tho l. a sogmeo of aworm-wheel 2U screw 21, adapted to im omlloss hoopsrstml lilo 1i It willbe re soon that by turning tlzls crank tho opor tor may miso tho drumfrom tho oporotivo posilion (shown in Fig. 2) out of the tank and moyoouss it to assumo a position over ouo also ollho tool; or ontiroly toOno side of o tank, so thzit the clrum may readily ho oo ltiell. it willalso ho seonthot the arms 8 and ll will roinain in a 'ortionl positionirreotivo of th ositioi31 of the arms 6 and v the limo when over theedge of tho ll: will he in close prounity to the some and will i t beraised to such a hoight as to make it inoonvoniont for the operator toin sort 0112111016 tho Work. The endless screw and worm-gear aresolf-looking-thot is to say, the worm-wheel cannot- (lrlvo the endlesssoreW- nnll whenever tho operator raises the (lI'LlIIl to a (losirodposition it will be maintainod in that position independently of mm"other locking devices. This is a material advantage in a device oi thiskind, where the drum frequently has to be raised and lowered. Theelectrodes 23 23 are arranged on each side of the drum and are suspendedfrom conductor'bars 24. These electrodes are curved, as shown in Fig. l,so as to closely conform to the curvature of the plating-drum. They donot meet at their lower ends, and there is left between these ends asmall gap through which the sediment which tends to accumulate on theelectrodes may fall 25 designates an electrical contact which when thedrum is lowered engages the arm E), which is in electrical contact withthe shaft 10 and spokes 13. In operation the current passes from theconductorbars 24 to the electrodes 23, through the solution and thearticles in the plating-drum, to the spokes 13, shaft 10, arm 9, and tothe contact 25.

The boards 30, forming the walls of the rotatable drum, as shown inFigs. 5 and 6, are formed of two thin sections 26 and 27, and these areeach provided with a large number of small openings 28, and the section27 is provided with longitudinal channels 29. Sections 26 and 27 aresecured together in such a way that the openings in 'the sections do notstand opposite each other, but are staggered, and are in communicationwith each other through the channels 29. With this construction it isimpossible for the articles being plated to become fastened in'theopenings and to damage the boards or to be broken. In the ordinaryconstruction where the holes penetrate directly through the side Wallsof the rotatable drum the articles frequently become engaged in theholes and loss due to breakage is considerable. We have illustrated thesection 26 as formed of hard rubber and the section 27 of wood. However,the materials out of which the sections are made may be varied, andwhile it is preferable to have the inner section made of wood or somesubstance which will not readily be broken by the articles in theplating tank and the outer section of some material which is not readilyacted on by the plating solution we do not care to be limited tosections composed of wood and hard rubber or of any particularsubstances, as these may be varied. It will also be seen that owing tothe prismoidal or angular form of the drum 12 and its relation to thesurface of the liquid, asindicated in Figs. 7 and8, the revolutions ofthe drum will cause the angles to project above the liquid at theirhighest points. This Will cause the electroplating solution to liow intoand out of the drum, and thereby cause a constant renewing andcirculation of the liquid within the drum. and around the articles being coated. This feature is of especial advanta e because the metalliccomponent of the solution in the vicinity of the articles being platedis quickly exhausted, and unless emcee fresh solution is introducedabout the articles the operation of electroplating is much retarded.Also when a strong current is used in plating hydrogen gas is evolvedand if allowed to remain in the drum also retards 147p the process.

The operation of our-device is obvious from the foregoing descri tion.

While we have descri ed one particular embodiment of our invention, weare aware that changes may be made in the same by those skilled in. theart without involving invention and without departim from the spirit ofour invention, and we desire to secure urotection from all such changes.

What we claim is 1. In a device of the kind described, a

tank, arms attached at one end to a side of the same and a rotatabledrum supported by the outer ends of said arms, and means for raisingsaid drum out of said tank and lower; ing it on one side of the tanksubstantially as described.

2. In a device of the kind described, a tank adapted to contain aliquid, arms hinged atone end to a side of the same and a.

rotatable receptacle sup orted by the other ends of said arms and aapted to be entirely submegged in said liquid substantially as describeL 3. In a device of the kind described, a

tank, arms hinged at one end to a side of the same and supporting at theother end a second set of arms bin ed thereto and a rotatable drumsupported at the ends of said sec-- ond set of arms substantially asdescribed.

4. In a device of the kind described, a I tank, arms hinged at one endto a side of the same, a rotatable drum supported by the outer ends ofthe same and a crank mounted on the side of the tank and combined withtransmittin mechanism to raise and lower the drumfsu stantially asdescribed.

5. In a device of the kind described, a tank, arms hinged at one end toa side of the same, a rotatable drum supported by the outer ends of thesame, a Worm-wheel 1n engageme'nt with one of said arms and an end lessscrew in en agement with said wormwheel, substantia ly as described.

6. In a device of the kind described a tank adapted to contain aliquid arotatable drum mounted on said tank and adapted to.

other one layer eing of wood and the other of hard rubber,andperforations in said boards formed by oppositely-disposed stag eredopenings connected with each other, y channels, the said openings andchannels forming passage-ways through the boards, substantially asdescribed. 7

8. In a derive of the kind described, a tank adapted'to contain a liquidand a rotatable drum mounted on said tank and adapted to be entirelysubmerged in said liquid and to rotate therein'means for raising saiddrum out of said liquid and to one side of the tank and means forretainin r it at any intermediate position substantia ly as described.

9. In a device of the kind described a retatable receptacle, comprisingboards forming the side walls thereof, said boards being formed of twolayers secured directly to each other, one layer being of strengtheningma-. terial and the other of waterproof material, and perforations insaid boards formed by oppositely-disposed staggered openings con 20nected with each other by channels, saith 0 enin s and channels formingpassage-Ways t ough the boards, substantially as described.

In testimony whereof We have signed our 25 names to this specificationin the presence of two subscribing Witnesses.

CLARENCE G. BACKUS. GEORGE L. WALLACE. Vitnesses:

ARTHUR W. BUSH, HARRY A. NOVAK.

